# -*- coding: utf-8 -*-
# @Time    : 2019/10/17 9:19
# @Author  : LiHaowen
# @Email   : lihaowen2017@163.com
# @File    : dict_abc.py
from collections.abc import Mapping, MutableMapping, Sized
# dict属于mapping类型
a = {}
print(isinstance(a, MutableMapping))

